Total hip arthroplasty in fused hips with spine stiffness in ankylosing spondylitis

Table 1 Comparison of outcome of total hip arthroplasty in ankylosing spondylitis

Ref.	Patients (Hips)	Follow up in mo	Pain relief (%)	Final MHHS	ROM score/ Mean flexion	Approach	Complications (%)
Bisla et al[58], 1976	23 (34)	42.5	91	NS	ROM-3	NS	5.88
Resnick et al[59], 1976	11 (21)	36	NS	NS	NS	NS	30 re-ankylosis; 6/20 hips
Williams et al[60], 1977	56 (99)	36	NS	NS	NS	NS	10
Baldursonn et al[61], 1977	10 (18)	45.6	94	NS	Flexion-90	NS	0
Shanahan et al[62], 1982	12 (16)	89	94	NS	NS	NS	6.25
Finsterbush et al[63], 1988	23 (35)	90	NS	NS	Flexion-86	NS	14.28
Walker et al[9], 1991	19 (29)	58	97	NS	ROM-4	NS	15; 3 hips re-ankylosis
Gualtieri et al[64], 1992	39 (73)	90	89	NS	NS	NS	0
Brinker et al[10], 1996	12 (20)	75	90	89.1	ROM-4	Posterior, Lateral	0
Sochart et al[55], 1997	24 (43)	276	100	NS	ROM-4	NS	27.9
Lehtimaki et al[56], 2001	54 (76)	240	NS	NS	NS	NS	3.94
Joshi et al[27], 2002	103 (181)	120	96	NS	NS	Lateral, Hardinge	10.5
Kim YL et al[65], 2007	12 (24)	132	NS	82.3	NS	Lateral	12.5
Bhan et al[11], 2008	54 (92)	102	62	82.6	ROM-4	Posterior	14
Li et al[66], 2009	24 (39)	36	NS	91	ROM-4	Posterolateral	2.5
Tang et al[12], 2000	58 (95)	135.4	94	88.8	ROM-4.2	Posterior	20
Bangjian et al[54], 2012	12 (24)	50.4	100	86.25	Flexion-84	Posterolateral	8.3; 2 intraoperative femur fractures; 2 osteolysis, polyethylene wear
Malhotra et al[67], 2012	23 (32)	42	NS	87.1	ROM-4	Posterior	3.1
Siavashi et al[68], 2014	77 (NA)	12	NS	88.22	ROM-5	Posterior, lateral	20.8
Xu et al[26], 2017	54 (81)	42	NS	86.1	Flexion-82.5	Posterolateral	0
Guo et al[69], 2019	26 (31)	46.5	80.6	87.1	Flexion90.8	Smith Peterson; lateral, Posterior	1 dislocation; Closed reduction; 12.9% HO
Bukowski BR et al[17], 2021	219 (309)	16 yr (192 mo)	NS	76	NS	Transtrochanteric (45%); Posterior (25%); Anterolateral (29%)	17.5% at 20 yr

Complications as percentage. Revision, dislocation, fractures, infection. HO: Heterotopic ossification; ROM: Reduced range of movement; MHHS: Modified Harris Hip Score; NS: Not specified.